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Spray Foam Insulation for the Attic

November 10, 2017

Homeowners considering spray foam insulation in Toronto will be wisely investing in the best insulation product on the market. When it comes to air sealing, moisture control, and energy efficiency, nothing can compare with the performance of spray foam. And in the attic, it’s the ideal option for upgrading or retrofitting the existing insulation.

Retrofitting with spray foam insulation is the most effective way to seal pockets of air leakage while ensuring the very best thermal insulation for both winter and summer weather. More importantly, energy efficiency is maximized, which in turn reduces overall energy consumption and decreases seasonal utility costs for many years to come.  

Today, more and more contractors are recommending spray foam insulation in Toronto as the product-of-choice for the attic and roof. Spray foam is considered to be high performance, with more benefits than other insulation products or combination of products. One on one, no product can compare with the high-performance level of spray foam.

While there is no shortage of insulation products on the market, spray foam offers numerous short-term and long-term benefits. For homeowners thinking about spray foam insulation in Toronto, it’s important to have the work done professionally. The product itself needs special handling, and the application requires previous experience.  

An insulation product that effectively seals & prevents air leakage in your attic

In the attic and roof cavity, spray foam does more with one application than any comparable product. It seals the entire attic space airtight. It provides very high R-Value insulation. And it adds structural strength wherever installed. For homeowners focused on energy efficiency, spray foam provides the highest performance, without compare.

With a professional install, spray foam does more than just insulate. Throughout the attic space, the “envelope” creates a combination air barrier and vapor barrier, preventing any air leakage or moisture accumulation. As a result, the HVAC system (heating + cooling) operates in better balance and with better performance (winter and summer).

Homeowners who have already installed spray foam insulation in Toronto are likely to notice the impact on home energy efficiency almost immediately. Most noticeable is a reduction in utility costs, including winter heating and summer cooling. Long run, the substantial savings, year after year, will serve to “pay down” the original project investment.

Spray foam insulation needs to be handled by professional installers

Probably of most importance with a spray foam installation is to work with a highly experienced professional. By any measure, this is not a weekend DIY project. Spray foam requires expert handling, and the application process requires a certain level of expertise. Trained installers know how to ensure an “insulation blanket” that will perform.

For those installing spray foam insulation in Toronto, it will likely deliver the best return-on-investment when compared with other applications. However, the spray foam product and installation will not suit every project budget. As such, a professional installer will have some valuable advice on a variety of “combination” installations.

In terms of contractors, homeowners would be wise to choose a full-service provider. In this way, warranties are trustworthy and customer satisfaction is guaranteed. A full-service contractor can also ensure follow-up in the event of any issues or problems.

Western Ontario

935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

TOLL FREE: 1-800-265-1914

Muskoka, Haliburton, Northern Ontario

1027 Elwell Park Road
Gravenhurst, Ontario
Canada P1P 1R1

TOLL FREE: 1-800-265-1914

Central Ontario

29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5

TOLL FREE: 1-800-265-1914

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

GTA & South Central Ontario

450 Industrial Dr,
Toronto (Milton), Ontario
Canada L9T 5A6

TOLL FREE: 1-800-265-1914

Eastern Ontario

1035 Moodie Dr #1,
Nepean, ON
K2R 1H4

TOLL FREE: 1-800-265-1914


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


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Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

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For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

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Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

100% Canadian

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Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.

Foam Masters

Do it right the first time
- with foam mastersTM

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.


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GREENGUARD® Gold Certification ensures the strictest criteria for low-level chemical emissions. Certified products are safe for individuals with sensitivities (children/elderly) and safe for use in school environments and health-care facilities. The product certification is widely recognized by the LEED Rating System (Leadership in Energy/Environmental Design).

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


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Quality + Performance = Savings

3MTM energy-saving products are designed to keep warm air in, and cold air out, while keeping energy bills down. Products optimize energy efficiency in buildings and homes; improve indoor environment for occupants; and effect the reduction of seasonal energy costs. 3M products are authorized for LEED credits (Leadership in Energy/Environmental Design).


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Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

Holmes and Holmes

Holmes and Holmes


Mike Holmes and his son Mike Jr. (MJ) convert MJ’s bachelor bungalow into a two-storey home for MJ and his girlfriend Lisa. Choosing the newest materials and build techniques, the father and son team follow Mike’s famous motto – “Make it right.” The show can be watched on HGTV and DIY Network.


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The Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – and Great Northern Insulation can pave the way.


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